Cold Air Intakes Mythbusted

[Kaspaas]

Opinions please??

https://www.youtube.com/watch?v=gCi2yo4UqPI" onclick="window.open(this.href);return false;

[4x4BEES]

Cold air intakes make the car sound better and thus makes it feel faster and more powerful.
I still prefer it to the stock intake system

[ThysdJ]

Cold air does work, but not on a turbo. The turbo heats the air up during the compression stage, which then gets cooled down by the intercooler... On a N/A vehicle cold air intakes do work.

[ForYota]

So dan is n snorkel mos n goeie belegging, cool looks en meer effektief

[ThysdJ]

'n snorkel is altyd 'n goeie belegging... punt...

[Mr_B]

Cold air induction worked wonders on my normally aspirated EFi 4Y... dyno proved it!

[pietpetoors]

Their test is not very scientific.
1st they take factory setup, get 165.5 , they do rerun and get 169

They then take the KN type and get 167.6, but they do not do a rerun? Why not?

Then they do cold air with the KN type, they get 169.8 and do not do a rerun, THEN they compare the cold air 169.8 with KN type's results with that of the factory setup and say there are no gain??? Seems like the test is meant to boost sensation rather than facts.

1. Compare apples with apples. If you compare KN type with cold air result with KN type the difference is about 2Kw
2. You cannot do a scientific test with less than 3 samples
3. The deviation between their 1st and second run on test 1 is about 3.5 KW, but if the difference between Cold with KN vs standard is 0.8 KW, then they call it no difference. In test 4 the deviation between run 1 and 2 is 0.8 Kw.

I did not look further than this because the test results are useless and poorly done.

[Die$eL]

These guys are really funny.

WRT the air intakes. We have tried on a dyno. On my 86 i gained 2WKW with a drop in filter.

On my RunX with CAI it made a big difference (run in conjunction with a full mandrel bent exhaust and branch). I dont remember the figures but there were definite gains. + it screamed like a unicorn having an orgasm... hahahahha

[pietpetoors]

Cool air = more dense air = more oxygen in chamber = better combustion = more power.

As for snorkel. I think if you have really old vehicle where intake is open inside the engine bay, it will suck in lots of hot air. Snorkel will be great improvement.

If you have newer vehicle where intake is inside fender in order to suck in colder air (and dust) then adding a snorkel will help to also breath..... cold air, the difference will not be that great, but you will see a difference, although small.

On a hot day, because of heat of the tar, it will be hotter under the fender than up there at the snorkel head, but the under fender temp will not be closely as high as the under bonnet temp.

So, me think the effect of a snorkel and cold air intake will differ from vehicle to vehicle, depending on where the original air intake is situated.

[Mud Dog]

Cool air = more dense air = more oxygen in chamber = better combustion = more power.

Definitely agree, but as you say, it depends on where the original intake was by comparison to the snorkel head.
To my mind, in reality, the power gains are small and often not noticeable but the real benefit is cleaner air which saves the filter. A cleaner filter allows for better airflow and that means significant power gain / fuel efficiency over a period of time.

[hend]

A 2kw gain on a basic power of 160 is just over 1%. Most dynos vannot provide repeatable results to an 1% repeatability. A 2kw gain is not proof of significant change

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